Voltage-to-current converter with rail-to-rail input range

Details Voltage-to-current converter with rail-to-rail input range Voltage-to-current converter with rail-to-rail input range

1996-12-18

1998-04-14

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323312, 323315, 363 37, G05F 316, G05F 320, H02M 700

Patent

active

057396787

ABSTRACT:
A voltage-to-current converter configured to operate over substantially the entire range of a power supply voltage signal that is employed to drive the voltage-to-current converter. A closed-loop voltage-to-current converter is configured to provide a first output current signal substantially linearly responsive to a predetermined range of an input voltage signal having values between the low voltage level of the power supply and a predetermined reference voltage signal. An open loop voltage-to-current converter is coupled to the closed-loop voltage-to-current converter. It is configured to provide a second output current signal, substantially linearly responsive to a predetermined range of input voltage signals, having values ranging between the reference voltage level and the high voltage level of the power supply. The first and second output currents are combined to provide the output current signal of the voltage-to-current converter.

REFERENCES:
patent: 5451859 (1995-09-01), Ryat
patent: 5523723 (1996-06-01), Arcus et al.
patent: 5619125 (1997-04-01), Lakshmikumar

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